Pinckney Police Chief Jeff Newton confirmed Monday that Sgt. William Cook was supposed to report to work at around 6 a.m. April 4, but about four hours prior to his shift, the sergeant emailed the chief and resigned. The reason was not known.

"He just resigned, effective immediately," Newton said. "He thanked the village for the opportunity. ... It's an odd thing. It's not something I saw coming. He simply resigned."

Newton said there are "no problems" with Cook's resignation, although he wished the officer had given notice. He said Cook was an employee "in good standing" and there were no disciplinary actions or any known reasons for the sudden resignation.

Cook, who appears to have moved from his home in Hamburg Township, has not returned phone messages or emails seeking comment.